
<script>

 
   const PI="3.1415"
    let[a,b,c]=[1,2,3]
    let user={name:'luhao',sex:'nan',age:18}
    let {name,sex,age}=user
    console.log(name,sex,age)
    let str1=`hello
    es6`
    console.log(str1)
    let info=`my name is ${name},age is ${age},sex is ${sex}`
    console.log(info)

    let fun=m=>m+1

</script>